Object a has a mass of 20 g
1 answer:
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Explanation:
The work of the electric force does not depend on the trajectory or the path taken. Regardless of trajectory a and b we have the following
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Wab: Work
K: coulomb constant (9·109 N·m2/C2)
Ra,Rb: distances
Qq: electric charges
Answer:
An increase in pressure
Explanation:
The ideal gas law states that:
where
p is the gas pressure
V is the volume
n is the number of moles
R is the gas constant
T is the temperature of the gas
in the equation, n and R are constant. For a gas kept at constant volume, V is constant as well. Therefore, from the formula we see that if the temperature (T) is increase, the pressure (p) must increase as well.
Answer:
Explanation:
The index of refraction is equal to the speed of light c in vacuum divided by its speed v in a substance, or . For our case we want to use
, which for our values is equal to:
Which we will express with 3 significant figures (since a product or quotient must contain the same number of significant figures as the measurement with the <em>least</em> number of significant figures):